If you specifically need a nine-column cast iron radiator, verify the section count and dimensions before ordering: none of the five listings below clearly identifies itself as a nine-column model. The Oswald Supply options are freestanding, four-tube cast iron radiators in different lengths; the NRG options are mild-steel radiators with a cast-iron style, not cast iron. Choose the Oswald models for actual cast iron, or consider NRG if you want a traditional look in a compact or wider format.
| Product | Material or construction listed | Best suited for |
|---|---|---|
| Oswald Supply 14-inch length | Cast iron, four-tube | Compact replacement or limited floor space |
| Oswald Supply 17.5-inch length | Cast iron, four-tube | A modest increase in radiator length |
| Oswald Supply 28-inch length | Cast iron, four-tube | A longer radiator footprint |
| NRG 300 x 425 mm | Mild steel, triple panel | Small spaces needing a traditional look |
| NRG 300 x 1010 mm | Cast-iron style, double panel | A wider, low-profile radiator look |
Oswald Supply 14-Inch Cast Iron Radiator
This is the shortest listed Oswald Supply option, measuring 19 inches high, 4-7/16 inches deep, and 14 inches long. It is described as a four-tube radiator for steam or hot-water heating, with freestanding installation. The listing also describes cast iron as providing quiet operation.
Best for: Buyers seeking a compact, actual cast iron radiator and working within a narrow available length. It is a relevant choice when matching a smaller existing radiator, but its stated four-tube construction does not establish that it is a nine-column model.
Limitation: The supplied product details do not provide a BTU output, connection specifications, or a confirmed nine-column section count. Check those details and the heating-system requirements before choosing it as a replacement.
Oswald Supply 17.5-Inch Cast Iron Radiator
This Oswald Supply radiator is listed at 19 inches high, 4-7/16 inches deep, and 17.5 inches long. It has four tubes and is identified for steam or hot-water use. The listing describes it as freestanding and presents it as an efficient replacement option; it also notes quiet operation from its cast iron construction.
Best for: Buyers who need a cast iron radiator slightly longer than the 14-inch option but do not have room for the 28-inch model. Its listed dimensions make it easier to compare against an existing unit or a planned floor space.
Limitation: No heat-output figure or connection measurements are included in the supplied features. It is not explicitly identified as a nine-column radiator, so confirm the exact section arrangement and plumbing fit with the seller before purchase.
Oswald Supply 28-Inch Cast Iron Radiator
At 28 inches long, this is the widest of the three listed Oswald Supply cast iron choices. Its stated height is 19 inches and its depth is 4-7/16 inches. The listing describes a four-tube design for steam or hot-water heating, freestanding installation, and quiet operation associated with cast iron.
Best for: Buyers who have space for a longer radiator and want a cast iron option rather than a steel radiator with a traditional appearance. Compared with the shorter Oswald models, its longer body may suit a wider installation area, but the listing does not state a heat-output figure.
Limitation: Do not assume that the longer body means nine columns or that it will provide a particular heat output. Confirm the section count, connections, and heating capacity needed for the room before treating it as a direct replacement.
NRG 300 x 425 mm Triple-Panel Radiator
This compact horizontal radiator measures 300 x 425 mm and has a triple-panel design with an anthracite powder-coated finish. The listing identifies its material as mild steel, so it is not a cast iron radiator despite the traditional cast-iron-style appearance. Its stated heat-output range is 952–1208 BTU, and the listing says it conforms to BS EN442 and is compatible with UK central heating systems.
Best for: Buyers prioritizing a small footprint, dark finish, and traditional radiator styling over genuine cast iron. The stated dimensions and BTU range provide useful comparison points for a compact installation.
Limitation: The listing specifies UK central heating compatibility, not compatibility with every American heating system. It is mild steel, and its triple-panel construction is not a verified nine-column configuration.
NRG 300 x 1010 mm White Double-Panel Radiator
This wider, low-profile NRG radiator measures 300 x 1010 mm and is listed as a double-panel model with a gloss white finish. The product description emphasizes smooth styling and a traditional column-radiator appearance. Its stated BTU output is 1836–2320, and the listing describes it for household spaces such as bedrooms, bathrooms, and living rooms.
Best for: Buyers who want a long horizontal radiator with a traditional look and a listed heat-output range. It is a steel alternative rather than a cast iron product, making it a different choice from the Oswald Supply radiators.
Limitation: The supplied features do not name the radiator’s material as cast iron, so do not purchase it if genuine cast iron is essential. Check heating-system suitability and installation requirements because the listing details do not confirm American system compatibility.
Buying Guide: How To Choose A Cast Iron Radiator
Is the radiator actually cast iron?
Start by separating material from appearance. A product described as “cast iron style” or “cast iron look” may use another material. In this selection, the Oswald Supply products are identified as cast iron, while the compact NRG product is explicitly made from mild steel. The other NRG description promotes cast-iron-style appearance but does not identify cast iron as its material.
If material matters for a replacement, confirm it in the product specifications rather than relying on the product title or photos. Cast iron and steel are not interchangeable descriptions. Also check the complete product documentation for weight, mounting or floor support, connection type, and installation guidance; those details are not fully supplied for these listings.
What does “nine column” mean for fit?
Column count describes the radiator’s construction, but it does not by itself establish the overall size or heat output. The supplied Oswald listings describe four-tube models, and the NRG products are described as triple- or double-panel radiators. None of these listings confirms a nine-column configuration.
If your search is for an exact nine-column replacement, ask the seller to confirm the number of sections or columns and compare that information with the existing radiator. Do not infer column count from a product image, length, or the number of panels. A radiator can look similar while having a different construction and heating capacity.
Which dimensions should you measure?
Measure the available height, length, and depth, then compare those figures with the product dimensions. The three Oswald models share a stated height of 19 inches and depth of 4-7/16 inches; their listed lengths are 14, 17.5, and 28 inches. The NRG models use metric dimensions: 300 x 425 mm and 300 x 1010 mm.
Allow for the space needed around the radiator and its connections, not just the body dimensions. Check whether the product’s listed measurements describe the radiator alone or include fittings. The provided feature information does not explain measurement conventions, so confirm them before ordering.
How should you compare heat output?
Use the required room heat output and the radiator’s stated capacity as the basis for comparison. The two NRG listings provide BTU ranges: 952–1208 BTU for the 300 x 425 mm model and 1836–2320 BTU for the 300 x 1010 mm model. The supplied Oswald Supply features do not provide BTU figures.
Do not use length or column count alone as a substitute for a heat-output specification. Output depends on product and system details, so ask for the manufacturer’s rating and the conditions used to calculate it. A qualified heating professional can help assess room requirements and system fit.
Will it work with your heating system?
Check whether the radiator is intended for steam, hot water, or another system, and verify its connection details with your installer. The Oswald listings describe the products for steam or hot-water use. The NRG 300 x 425 mm listing specifically says it is compatible with UK central heating systems; that statement does not confirm compatibility with every U.S. system.
Before buying, verify inlet and outlet positions, valve requirements, operating conditions, and any local installation requirements. Those details are not included in the supplied product features. A product described for a heating type may still need specific connections or system conditions to fit a particular installation.
How do material, finish, and installation affect the choice?
Choose cast iron when genuine cast iron construction is a requirement, and choose a steel style radiator only if its material and specifications meet your needs. The NRG compact model has an anthracite powder-coated finish; the wider NRG model has a gloss white finish. The Oswald listings emphasize cast iron and freestanding installation.
Consider how the finish fits the room, but treat appearance as separate from capacity and system compatibility. Also plan for installation and support based on the product’s actual weight and instructions. The supplied features do not provide weights, so obtain that information before planning handling or floor support.
Frequently Asked Questions
Are any of these listings confirmed nine-column cast iron radiators?
No. The Oswald Supply products are listed as four-tube cast iron radiators, and the NRG products are panel radiators with cast-iron-style descriptions. The supplied information does not confirm a nine-column model.
Which listed product is actual cast iron?
The three Oswald Supply models are identified as cast iron. The NRG 300 x 425 mm model is explicitly described as mild steel, and the wider NRG listing describes a cast-iron-style appearance without identifying its material as cast iron.
Which Oswald Supply radiator is the shortest?
The 14-inch-long Oswald Supply model is the shortest listed option. The other listed lengths are 17.5 inches and 28 inches; all three are stated to be 19 inches high and 4-7/16 inches deep.
Do the Oswald Supply listings provide BTU ratings?
No BTU rating appears in the supplied Oswald Supply product features. Request a heat-output specification before selecting one based on room-heating needs.
Are the NRG radiators confirmed for U.S. heating systems?
The supplied features do not confirm U.S. system compatibility. One NRG listing specifically refers to UK central heating systems, so verify requirements with the seller or a qualified heating professional before purchase.